Hi
DPC Latency = Deferred Procedure Call Latency = how long it takes Windows to
get around to doing what it should do real time. Put another way - how lazy is
your computer?
It may not be a big issue, but it's probably worth checking for free:
http://www.thesycon.de/deu/latency_check.shtml
We
Those of us who run SDRs are all too familiar with the DPC issue...
You're right, this is a useful little tool.
Bill
On Sat, Jun 18, 2011 at 9:42 AM, Bob Camp li...@rtty.us wrote:
Hi
DPC Latency = Deferred Procedure Call Latency = how long it takes Windows
to get around to doing what it
Hi
I did indeed originally come across it in the SDR context.
Bob
On Jun 18, 2011, at 9:46 AM, William H. Fite wrote:
Those of us who run SDRs are all too familiar with the DPC issue...
You're right, this is a useful little tool.
Bill
On Sat, Jun 18, 2011 at 9:42 AM, Bob Camp
Hi
DPC Latency = Deferred Procedure Call Latency = how long it takes
Windows to get around to doing what it should do real time. Put another
way - how lazy is your computer?
It may not be a big issue, but it's probably worth checking for free:
http://www.thesycon.de/deu/latency_check.shtml
We
Hi
My concern would be a really bad driver that spikes into the 1,000's of us
every so often. Every once in a great while there could be a collision. That
would really drive you crazy trying to find it.
Bob
On Jun 18, 2011, at 10:04 AM, David J Taylor wrote:
Hi
DPC Latency = Deferred
Hi
My concern would be a really bad driver that spikes into the 1,000's of
us every so often. Every once in a great while there could be a
collision. That would really drive you crazy trying to find it.
Bob
Indeed, Bob. On a critical system, it might be best to establish a
baseline for
I tried two PCs and my D525 system has 2mS hits. Unfortunately this
program doesn't really aid in finding the glitch. I turned off the sound
and not much difference. My AMD quad core has peaks of 200us.
Regarding linux, I've never tried them, but there are hacks to reduce
the latency. Google
Doing a bit of bios hacking, DPC shows better results with Plug and Play
enabled. It is my understanding that it is better to let the bios handle
plug and play rather than the OS, but the results are better with Plug
and Play handled by win7.
___
Hi
Like any basic tool it's just a start. Simply knowing that the system has this
or that latency compared to another system is a useful piece of data. Anything
under 100 us isn't going to be easy to find. Stuff that's into the many ms
range probably should be tracked down.
Bob
On Jun 18,
